Year	Number of Firms
1992-01-01	9
1997-01-01	15
2002-01-01	13
2003-01-01	13
2004-01-01	12
2005-01-01	15
2006-01-01	12
2007-01-01	11
2008-01-01	12
2009-01-01	13
2010-01-01	15
2011-01-01	10
2012-01-01	12
2013-01-01	13
2014-01-01	11
2015-01-01	9
2016-01-01	12